Semaphore

How it is used

Used to limit concurrent work or signal availability. A counting semaphore can allow more than one task, unlike a mutex.

Example sentences

1. A semaphore limits the image processor to four simultaneous downloads.

   Each download needs a permit, so additional tasks wait when all four are in use.

2. The worker releases the semaphore even when decoding the file fails.

   Returning the permit prevents a failed task from permanently reducing available capacity.

Common collocations

• counting semaphore
• acquire a semaphore
• release a semaphore

Related terms

• mutexA synchronization mechanism that allows only one cooperating execution context at a time to enter a protected section.
• threadA sequence of execution within a process that can run alongside other sequences while sharing some process resources.

More terms: Programming Concepts

• function
• variable
• codebase
• library
• call
• loop
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• parameter
• IDE
• compile
• string
• boolean